/* 滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  
  ::-webkit-scrollbar-track {
    background-color: rgba(73, 177, 245, 0.2);
    border-radius: 2em;
  }
  
  ::-webkit-scrollbar-thumb {
    background-color: #49b1f5;
    background-image: -webkit-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.4) 25%,
      transparent 25%,
      transparent 50%,
      rgba(255, 255, 255, 0.4) 50%,
      rgba(255, 255, 255, 0.4) 75%,
      transparent 75%,
      transparent
    );
    border-radius: 2em;
  }
  
  ::-webkit-scrollbar-corner {
    background-color: transparent;
  }
  
  ::-moz-selection {
    color: #fff;
    background-color: #49b1f5;
  }